User:Shiningheart

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‏משתמש זה דובר עברית כשפת אם.‏
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Entry of Other Sugars to the Glycolysis Pathway[edit]

Fructose[edit]

Fructose is, as the name suggests, the main sugar in fruit. In the human body, fructose is the primary sugar supplying sperm and adipose cells.

The first step involves the enzyme Fructokinase, which phosphorylates fructose into Fructose-1-phostphate. As in the glucose pathway, phosphorylation prevents the free movement of fructose through the plasma membrane, ensuring that it remain in the cell.
Fructose (Fru) Fructokinase Fructose-1-phosphate (F1P)
Fructose.png   Fructose-1-phosphate.png
ATP H+ + ADP
Biochem reaction arrow forward YYNN horiz med.png
 
 
The next step splits the molecule, with the catalysis of an aldolase.
Fructose-1-phosphate (F1P) Fructose 1-P aldolase Glyceraldehyde (Gly) dihydroxyacetone phosphate (DHAP)
Fructose-1-phosphate.png Glyceraldehyde-2D-skeletal.png + Glycerone-phosphate wpmp.png
Biochem reaction arrow reversible NNNN horiz med.png

DHAP is processed regularly as part of the glycolysis pathway. Glyceraldehyde is processed in the following reaction.

Glyceraldehyde (Gly) Triose kinase G3P (G3P)
Glyceraldehyde-2D-skeletal.png   G3P-2D-skeletal.png
ATP H+ + ADP
Biochem reaction arrow forward YYNN horiz med.png